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Pines Ground Water Plume Site

Site Information
Map of boron & molybdenumView larger map
Contact Information

Community Involvement Coordinator
Susan Pastor (pastor.susan@epa.gov)
312-353-1325 or 800-621-8431, ext. 31325

Remedial Project Manager
Erik Hardin (hardin.erik@epa.gov)
312-886-2402 or 800-621-8431, ext. 62402  

Media/Press Contact
Francisco Acraute (arcaute.francisco@epa.gov)

IDEM Project Manager
Doug Petroff
Indiana Department of Environmental Management

Indiana State Department of Health
Environmental Public Health Division Director  
Mike Mettler

Agency for Toxic Substances & Disease Registry
Senior Environmental Health Scientist
Mark Johnson


(where to view written records)

Michigan City Public Library
100 E. 4th St.
Michigan City, IN


The Pines Groundwater Site is located about 4 miles west of Michigan City and about 1 mile south of Lake Michigan in Porter County, Indiana.

The U.S. Environmental Protection Agency tested residential drinking water wells in the Town of Pines In May 2002, based on high levels of the metals boron and molybdenum found in drinking water wells by the Indiana Department of Environmental Management. The metals appeared to come from coal combustion by-products, or CCBs, composed primarily of fly ash that was disposed of in a nearby landfill called Yard 520. Other areas in the town were also identified as having CCB materials.  Ash, primarily bottom ash, was used as fill in residential yards as well as road surfaces and subsurfaces.  CCBs are the result of burning coal to make electricity.

In 2003 and 2004, Northern Indiana Public Service Company, Brown, Inc., Ddalt Corp., and Bulk Transport, the companies determined to be responsible for the contamination, agreed  to provide municipal water to about 270 homes in and near the Town of Pines. About 70 more homes received bottled water pending the results of an investigation.  The results are summarized in a 2010 document called a remedial investigation report.

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Site Updates

July 2014

The companies tested soil in about 45 yards in April, May, and June. Permission to do so was obtained from the homeowners. The testing, which was overseen by EPA staff and contractors, was done to confirm the amount of coal ash in yards and rights of way as well as to see if elevated radiation levels are present. The radiation testing involved workers walking around yards with monitoring equipment. Coal ash testing involved some digging with hand tools.

Since the spring testing was a general scan for radiation, workers will return in August to take more precise soil samples at approximately nine different private properties. They will focus on specific radioactive compounds as well as other “contaminants of concern” such as boron and arsenic. The samples will be sent to an EPA-approved lab for analysis.

EPA expects to soon receive a fourth draft of the feasibility study that will include several possible groundwater cleanup options. When it is approved, EPA will propose an option and present it to the public for review and comment. EPA hopes a final cleanup decision can be made by late 2015 after public comments are considered.

People In Need of Environmental Services, or PINES, is a local community group that has an EPA technical assistance plan. The group is receiving services such as technical advice and outreach assistance valued at more than $50,000. PINES members requested that the radiation sampling be done.


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